Na is the chemical symbol for which element?

More Questions:

The first American blood bank was established in 1937 in which city?

What Ayn Rand novel opens with the question: "Who is John Galt?"?

Who remarked when Gertrude Stein complained she didn't look like a portrait he'd painted: "You will"?

How many of the seven dwarfs have beards?

Belgium's name is derived from what Roman province?

What layer of the atmosphere is closest to the earth?

Io orbits what planet of the solar system?

In the show "Family Guy', which US president has been seen happily singing in public about being nude?

Who was Kevin Arnold's some time girlfriend on "The Wonder Years"?

The choreographer of the movie "High School Musical" previously choreographed what popular 1987 movie?

What two long-running 1980s TV shows featured characters called Uncle Jesse?

Who fretted over exponential population growth in his "An Essay on the Principles of Population"?

Who was the first American in space?

What did the Emancipation Proclamation do?

When was NATO formed?